/* Yet Another Forum.NET
 * Copyright (C) 2003-2005 Bjørnar Henden
 * Copyright (C) 2006-2013 Jaben Cargman
 * Copyright (C) 2014-2020 Ingo Herbote
 * https://www.yetanotherforum.net/
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at

 * https://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
namespace YAF.Core.Tasks
{
    using System;

    using YAF.Configuration;
    using YAF.Types.Attributes;
    using YAF.Types.Interfaces;

    /// <summary>
    /// The base background task.
    /// </summary>
    public abstract class BaseBackgroundTask : IBackgroundTask, IHaveServiceLocator
    {
        /// <summary>
        /// The _board id.
        /// </summary>
        protected int _boardId = ControlSettings.Current.BoardID;

        /// <summary>
        /// The _is running.
        /// </summary>
        protected bool _isRunning;

        /// <summary>
        /// The _lock object.
        /// </summary>
        protected object _lockObject = new object();

        /// <summary>
        /// The _started.
        /// </summary>
        protected DateTime _started;

        #region IBackgroundTask Members

        /// <summary>
        /// Gets or sets BoardID.
        /// </summary>
        public virtual object Data
        {
            protected get
            {
                return this._boardId;
            }

            set
            {
                this._boardId = (int)value;
            }
        }

        /// <summary>
        /// Gets or sets a value indicating whether IsRunning.
        /// </summary>
        public virtual bool IsRunning
        {
            get
            {
                lock (this._lockObject)
                {
                    return this._isRunning;
                }
            }

            protected set
            {
                lock (this._lockObject)
                {
                    if (!this._isRunning && value)
                    {
                        this._started = DateTime.UtcNow;
                    }

                    this._isRunning = value;
                }
            }
        }

        /// <summary>
        /// Gets Started.
        /// </summary>
        public virtual DateTime Started => this._started;

        /// <summary>
        /// The run.
        /// </summary>
        public virtual void Run()
        {
            this.IsRunning = true;

            this.RunOnce();

            this.IsRunning = false;
        }

        /// <summary>
        /// The dispose.
        /// </summary>
        public virtual void Dispose()
        {
            this.IsRunning = false;
        }

        #endregion

        /// <summary>
        /// The run once.
        /// </summary>
        public abstract void RunOnce();

        #region Implementation of IHaveServiceLocator

        /// <summary>
        /// Gets ServiceLocator.
        /// </summary>
        [Inject]
        public IServiceLocator ServiceLocator { get; set; }

        [Inject]
        public ILogger Logger { get; set; }

        #endregion
    }
}